Some are claiming they have 'confirmation' there is a Canon 'camera' out there with a 75+ MP sensor floating around. Like I said in my last post, there is no doubt Canon is experimenting on sensors beyond the 50+ MP range. They have technologies on their shelves that will make your head spin. In fact, experimental sensors may even range up to 100+ MP but to have an EOS-1 type camera with a 75+ MP sensor in some photographers' hands, out in the wild, lacks credibility in my book.
Of course, there is no way to prove a negative since if this camera does exist in some photographers' bag, they must have been required to sign an air-tight, Non Disclosure Agreement with Canon. It is rather fruitless to claim the existence of some camera that may never see the light of day.
Fact of the matter is, Canon is too conservative a company to put a super megapixel sensor on the next EOS-1 body. They will most likely follow their tried-and-true formula and introduce a 40+ MP sensor on their next megapixel camera some time later this year, with delivery expected early next year.